\documentclass{report}

\input{Base}
\input{Geometry}
\input{Language}

\input{MathOperators}
\input{NewCommands}
\input{Theorems}

%TikZ for drawing
\input{TikZ}

%Code listings
\input{Listings}

\begin{document}


\end{document}

\geometry{
  a4paper,
  paperwidth=21cm,
  paperheight=35cm,
  headheight=2.5cm,
  total=17cm,
  left=3cm,
  right=3cm,
  top=3cm,
  headsep=0.5cm,
  hoffset=-1.5cm,
  bottom=3cm,
}

\setlength{\parindent}{0cm}